package com.tool;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 * @author niuyicong
 * @date 2024/10/22  23:18:15
 * @description
 */
public class ThreadLocalDemo2 {
    public static void main(String[] args) {
        MyData myData = new MyData();
        ExecutorService threadPool = Executors.newFixedThreadPool(3);

        try {
            for (int i = 0; i < 10; i++) {
                threadPool.submit(() -> {
                    try{
                        Integer beforeInt = myData.threadLocal.get();
                        myData.add();
                        Integer afterInt = myData.threadLocal.get();
                        System.out.println(Thread.currentThread().getName() + "\t beforeInt:" + beforeInt + "\t afterInt:" + afterInt);
                    }finally {
                        myData.threadLocal.remove();
                    }
                });
            }
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            threadPool.shutdown();
        }
    }
}

class MyData{
    ThreadLocal<Integer> threadLocal= ThreadLocal.withInitial(() -> 0);
    public void add(){
        threadLocal.set(threadLocal.get() + 1);
    }
}
